We've got very good workshop facilities here . We do all our own servicing and most repairs . We have separate areas for welding , grinding and sawing .   Is there anything you don't do in-house ?   Yes . If we don't have the facilities to deal with it here , we send it out for maintenance .   Is that more expensive ?   It depends on the job . It's actually more cost-effective than buying specialist equipment that we don't use very often . 